As the front lines froze, and air defenses got better, Russia and Ukraine pivoted away from close bombing runs to standoff attacks.

Russia launched yet another attack on Ukraine overnight, with more than 300 drones and seven missiles, according to Ukraine's air force. While most of the barrage was intercepted, the relentless attacks prompted President Trump to give his Russian counterpart an ultimatum.

The long-range Russian drones come in swarms each night, buzzing over Ukraine by the hundreds, terrorizing the population and attacking targets from the industrial east to areas near its western border with Poland.